<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>
        {% block title%}{% end %}
    </title>
</head>
<body>
<div>
    {% block header %}{% end %}
</div>
<div>
    {% block body %}{% end %}
</div>
<div>
    {% block footer %}{% end %}
</div>
</body>
</html>